package com.cxrj.zhsq.utils;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.URL;
import java.net.URLConnection;
import java.util.Map;

import com.alibaba.druid.support.json.JSONUtils;

public class HttpClientHelper1 {
	public static String invokeRequest(String urlToRequest, Map<String, Object> parameters) {
		OutputStreamWriter out = null;
		BufferedReader in = null;
		String resultStr = "";
		try {
			System.out.println("Reuqest URL:::" + urlToRequest);
			URL realUrl = new URL(urlToRequest);
			// 打开和URL之间的连接
			URLConnection conn = realUrl.openConnection();
			// 设置通用的请求属性
			conn.setRequestProperty("accept", "*/*");
			conn.setRequestProperty("connection", "Keep-Alive");
			conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
			conn.setRequestProperty("Content-Type", "application/json");
			// 发送POST请求必须设置如下两行
			conn.setDoOutput(true);
			conn.setDoInput(true);
			// 获取URLConnection对象对应的输出流
			out = new OutputStreamWriter(conn.getOutputStream(), "utf-8");
			// 发送请求参数
			String parameter = JSONUtils.toJSONString(parameters);
			System.out.println("PARAMETER:::" + parameter);
			out.write(parameter);
			// flush输出流的缓冲
			out.flush();
			// 定义BufferedReader输入流来读取URL的响应
			in = new BufferedReader(new InputStreamReader(conn.getInputStream(), "utf-8"));
			String line;
			while ((line = in.readLine()) != null) {
				resultStr += line;
			}
		} catch (Exception e) {
			e.printStackTrace();
			resultStr = "调用接口异常！" + e;
		}
		// 使用finally块来关闭输出流、输入流
		finally {
			try {
				if (out != null) {
					out.close();
				}
				if (in != null) {
					in.close();
				}
			} catch (IOException ex) {
				ex.printStackTrace();
			}
		}
		return resultStr;
	}
}